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Jiao A, Sun J, Sun Z, Zhao Y, Han T, Zhang H, Gao Q. Effects of limonin on oxidative stress and early apoptosis in oocytes during in vitro maturation. Theriogenology 2024; 218:8-15. [PMID: 38290232 DOI: 10.1016/j.theriogenology.2024.01.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 02/01/2024]
Abstract
To investigate the effects of limonin (Lim) on oxidative stress and early apoptosis in bovine oocytes during in vitro maturation (IVM), different concentrations of Lim (0, 10, 20, 50 μmol/L) were added to bovine IVM medium. Oocyte maturation rates and development 24 h after in vitro fertilization (IVF) were examined to determine the optimal Lim concentration. The optimal Lim concentration was added to the IVM medium, and 0 μmol/L Lim was used as the control. Immunofluorescence staining was used to detect the abnormal rate of spindle assembly, reactive oxygen species (ROS), glutathione (GSH), mitochondrial membrane potential (MMP) levels, mitochondrial distribution, and the fluorescence intensity of cathepsin B (CB)-active LC3 protein. RT‒qPCR was used to detect the mRNA expression levels of antioxidant-, apoptosis- and autophagy-related genes in oocytes. The total number of blastocysts and the proportion of apoptotic cells among blastocysts were detected. The results showed that the PBI ejection rate, cleavage rate and blastocyst rate of bovine oocytes in the 20 μmol/L Lim group were significantly higher than those in the control group (P < 0.05). Compared with those in the control group, ROS levels, abnormal mitochondrial distribution, the proportion of abnormal spindle assembly, CB activity and LC3 protein fluorescence intensity of oocytes in the 20 μmol/L Lim group were significantly decreased (P < 0.05), and GSH and MMP levels were significantly increased (P < 0.05). The expression of antioxidant genes (Prdx3, Prdx6, Sirt1) and antiapoptotic genes (Bcl-xl, Survivin) were significantly upregulated (P < 0.05), and the expression levels of proapoptotic genes (Caspase-4, BAX) and autophagy-related genes (LC3) were significantly downregulated (P < 0.05). The total number of cells among in vitro fertilized embryos was significantly increased (P < 0.05), and the apoptosis rate of blastocysts was significantly decreased (P < 0.05). Here, we show that Lim exerts positive effects on bovine oocyte IVM by regulating REDOX homeostasis, reducing spindle damage and enhancing mitochondrial function during IVM, thereby inhibiting oocyte apoptosis and autophagy.
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Affiliation(s)
- Anhui Jiao
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Jingyu Sun
- Tianjin Limu Biotechnology Co., LTD., Tianjin, 300456, China
| | - Zhaoyang Sun
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Yuhan Zhao
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Tiancang Han
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Hongbo Zhang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Qingshan Gao
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China.
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Ezz MA, Takahashi M, Rivera RM, Balboula AZ. Cathepsin L regulates oocyte meiosis and preimplantation embryo development. Cell Prolif 2024; 57:e13526. [PMID: 37417221 PMCID: PMC10771118 DOI: 10.1111/cpr.13526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/28/2023] [Accepted: 06/26/2023] [Indexed: 07/08/2023] Open
Abstract
Early embryonic loss, caused by reduced embryo developmental competence, is the major cause of subfertility in humans and animals. This embryo developmental competence is determined during oocyte maturation and the first embryo divisions. Therefore, it is essential to identify the underlying molecules regulating these critical developmental stages. Cathepsin L (CTSL), a lysosomal cysteine protease, is involved in regulating cell cycle progression, proliferation and invasion of different cell types. However, CTSL role in mammalian embryo development is unknown. Using bovine in vitro maturation and culture systems, we show that CTSL is a key regulator for embryo developmental competence. We employed a specific CTSL detection assay in live cells to show that CTSL activity correlates with meiotic progression and early embryo development. Inhibiting CTSL activity during oocyte maturation or early embryo development significantly impaired oocyte and embryo developmental competence as evidenced by lower cleavage, blastocyst and hatched blastocyst rates. Moreover, enhancing CTSL activity, using recombinant CTSL (rCTSL), during oocyte maturation or early embryo development significantly improved oocyte and embryo developmental competence. Importantly, rCTSL supplementation during oocyte maturation and early embryo development significantly improved the developmental competence of heat-shocked oocytes/embryos which are notoriously known for reduced quality. Altogether, these results provide novel evidence that CTSL plays a pivotal role in regulating oocyte meiosis and early embryonic development.
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Affiliation(s)
- Mohamed Aboul Ezz
- Department of Theriogenology, Faculty of Veterinary MedicineMansoura UniversityMansouraEgypt
- Division of Animal SciencesUniversity of MissouriColumbiaMissouriUSA
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Arav A, Natan Y, Hejja T, Blum YD, Poliansky Y, Patrizio P. The effect of amorphous calcium carbonate as a culture media supplement on embryonic development of murine sibling embryos. J Assist Reprod Genet 2023; 40:2409-2418. [PMID: 37552357 PMCID: PMC10504146 DOI: 10.1007/s10815-023-02899-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/21/2023] [Indexed: 08/09/2023] Open
Abstract
PURPOSE The aim of this study was to compare the addition in culture media of stabilized amorphous calcium carbonate (ACC) versus calcium chloride (CaCl2) or calcium carbonate in crystalline form (CCC) on growth rates among sibling mouse embryos. METHODS We evaluated the effect of different ACC concentrations on the rates of embryo compaction at 60 h, blastocyst rate at 84 h and percentage of fully hatched at 108 h following hCG injection. As ACC is stabilized by tripolyphosphate (TPP), we also evaluated the addition of TPP alone to the culture media. Finally, we compared supplemented ACC culture media to one-step SAGE and Irvine cleavage media. RESULTS The results revealed that ACC accelerates the compaction and blastocyst rates, as well as the percentage of fully hatched embryos in a dose-dependent manner, with an increased positive effect at 2.5 mM. The magnitude of the effect for ACC-supplemented media on the embryo developmental rate was between 30 to 40% (p < 0.01) faster for each stage, compared to both SAGE and Irvine one-step standard media. Embryos cultured with SAGE or Irvine media with or without supplementation of CaCl2 or CCC, did not produce the same improvements as observed with ACC. CONCLUSION In conclusion, the ACC demonstrates a rapid modulation effect for restoring media optimal pH. ACC can inhibit cathepsin B activity during in vitro culture of fibroblast cells. The beneficial impact of ACC on cleavage mouse embryos is likely due to an improved buffering effect causing slower pH media variations, which may enhance quality and implantation potential of embryos following in vitro culture.
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Affiliation(s)
- Amir Arav
- A.A Cash Technology, Shlomtzion Hamalca, 59, Tel Aviv, Israel.
| | - Yehudit Natan
- A.A Cash Technology, Shlomtzion Hamalca, 59, Tel Aviv, Israel
| | | | | | | | - Pasquale Patrizio
- Division Reproductive Endocrinology & Infertility, Miller School of Medicine, University of Miami, Miami, FL, USA
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Balboula AZ, Aboelenain M, Sakatani M, Yamanaka KI, Bai H, Shirozu T, Kawahara M, Hegab AEO, Zaabel SM, Takahashi M. Effect of E-64 Supplementation during In Vitro Maturation on the Developmental Competence of Bovine OPU-Derived Oocytes. Genes (Basel) 2022; 13:genes13020324. [PMID: 35205369 PMCID: PMC8872247 DOI: 10.3390/genes13020324] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/05/2022] [Accepted: 02/08/2022] [Indexed: 02/05/2023] Open
Abstract
Recovery of bovine oocytes using the ovum pick-up (OPU) technique offers the advantage of rapid genetic improvement through propagation of desired genes from animals with high genetic qualities. However, the developmental competence of OPU-derived immature oocytes remains relatively poor. We previously found that cathepsin B gene expression and activity are increased in poor quality oocytes and embryos compared to good quality ones. In this study, we investigated the effect of E-64 (cathepsin B inhibitor) supplementation during in vitro maturation (IVM) on the developmental competence of OPU-derived immature oocytes and the quality of the produced blastocysts. Our results showed that supplementation of IVM medium with E-64 significantly improved the developmental competence of OPU-derived immature oocytes as evidenced by the significant increase of the blastocyst rate. Importantly, the presence of E-64 during IVM also significantly improved blastocyst quality by increasing the total cell number and decreasing the percentage of TUNEL positive cells. These results indicate that E-64 supplementation during IVM is a promising tool to improve the efficiency of OPU-IVF program by improving the developmental competence of OPU-derived immature oocytes.
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Affiliation(s)
- Ahmed Z. Balboula
- Animal Sciences Research Center, University of Missouri, Columbia, MO 65211, USA;
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto 861-1192, Japan; (M.S.); (K.-I.Y.)
- Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt; (M.A.); (A.E.O.H.); (S.M.Z.)
| | - Mansour Aboelenain
- Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt; (M.A.); (A.E.O.H.); (S.M.Z.)
- Genetics Department, Rutgers University, 145 Bevier Rd., Piscataway, NJ 08854, USA
| | - Miki Sakatani
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto 861-1192, Japan; (M.S.); (K.-I.Y.)
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Tochigi 329-2793, Japan
| | - Ken-Ichi Yamanaka
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto 861-1192, Japan; (M.S.); (K.-I.Y.)
- Faculty of Agriculture, Saga University, Honjo-machi, Saga 840-8502, Japan
| | - Hanako Bai
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (H.B.); (T.S.); (M.K.)
| | - Takahiro Shirozu
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (H.B.); (T.S.); (M.K.)
| | - Manabu Kawahara
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (H.B.); (T.S.); (M.K.)
| | - Abd Elraouf O. Hegab
- Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt; (M.A.); (A.E.O.H.); (S.M.Z.)
- Department of Biology, Faculty of Science, Taif University, Taif 26571, Saudi Arabia
| | - Samy M. Zaabel
- Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt; (M.A.); (A.E.O.H.); (S.M.Z.)
| | - Masashi Takahashi
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto 861-1192, Japan; (M.S.); (K.-I.Y.)
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (H.B.); (T.S.); (M.K.)
- Research Faculty of Agriculture/Global Center for Food, Land and Water Resources, Hokkaido University, Sapporo 060-8589, Japan
- Correspondence:
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Lin X, Fu B, Xiong Y, Xu S, Liu J, Zaky MY, Qiu D, Wu H. Folic acid Ameliorates the Declining Quality of Sodium Fluoride-Exposed Mouse Oocytes through the Sirt1/ Sod2 Pathway. Aging Dis 2022; 13:1471-1487. [PMID: 36186127 PMCID: PMC9466976 DOI: 10.14336/ad.2022.0217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 02/17/2022] [Indexed: 11/16/2022] Open
Abstract
Excessive sodium fluoride (NaF) intake interferes with reproductive function in humans and animals; however, strategies to prevent these effects are still underexplored. Here, we showed that in vivo and in vitro supplementation of folic acid (FA) efficaciously improved the quality of NaF-exposed oocytes. FA supplementation not only increased ovulation of oocytes from NaF-treated mice but also enhanced oocyte meiotic competency and fertilization ability by restoring the spindle/chromosome structure. Moreover, FA supplementation could exert a beneficial effect on NaF- exposed oocytes by restoring mitochondrial function, eliminating reactive oxygen species accumulation to suppress apoptosis. We also found that FA supplementation restored the defective phenotypes in oocytes through a Sirt1/Sod2-dependent mechanism. Inhibition of Sirt1 with EX527 abolished the FA-mediated improvement in NaF-exposed oocyte quality. Collectively, our data indicated that FA supplementation is a feasible approach to protect oocytes from NaF-related deterioration.
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Affiliation(s)
- Xiaoyuan Lin
- School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Beibei Fu
- School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Yan Xiong
- School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Shiyao Xu
- School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Jin Liu
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, China.
| | - Mohamed Y. Zaky
- Molecular Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
| | - Dan Qiu
- School of Life Sciences, Chongqing University, Chongqing 401331, China.
- Center of Space Exploration, Ministry of Education, Chongqing University, Chongqing, China
- Correspondence should be addressed to: Dr. Haibo Wu, School of Life Sciences, Chongqing University, Chongqing 401331, China. ; Dr. Dan Qiu, School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Haibo Wu
- School of Life Sciences, Chongqing University, Chongqing 401331, China.
- Correspondence should be addressed to: Dr. Haibo Wu, School of Life Sciences, Chongqing University, Chongqing 401331, China. ; Dr. Dan Qiu, School of Life Sciences, Chongqing University, Chongqing 401331, China.
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Chen C, Ahmad MJ, Ye T, Du C, Zhang X, Liang A, Yang L. Cathepsin B Regulates Mice Granulosa Cells' Apoptosis and Proliferation In Vitro. Int J Mol Sci 2021; 22:ijms222111827. [PMID: 34769258 PMCID: PMC8584394 DOI: 10.3390/ijms222111827] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 12/11/2022] Open
Abstract
Cathepsin B (CTSB), a lysosomal cysteine protease’s high expression and activity, has been reported to cause poor-quality embryos in porcine and bovine. Nevertheless, CTSB functions in mice granulosa cells remain to explore. To discuss the CTSB functional role in follicular dynamics, we studied apoptosis, proliferation, cell cycle progression, and related signaling pathways in primary mouse granulosa cells transfected with small interference RNA specific to CTSB (siCTSB) for 48 h. Further, mRNA and protein expression of cell proliferation regulators (Myc and cyclin D2), apoptosis regulators (caspase 3, caspase 8, TNF-α, and Bcl2), steroidogenesis-related genes (FSHR and CYP11A1), and autophagy markers (LC3-I and ATG5) were investigated. In addition, the effect of CTSB on steroidogenesis and autophagy was also examined. Flow cytometry analysis assay displayed that silencing of CTSB decreased the early and total apoptosis rate by downregulating TNF-α, caspase 8, and caspase 3, and upregulating Bcl2. By regulating Myc and cyclin D2 expression and activating the p-Akt and p-ERK pathways, CTSB knockdown increased GC proliferation and number. A significant decline in estradiol and progesterone concentrations was observed parallel to a significant decrease in autophagy-related markers LC3-I and ATG5 compared to the control group. Herein, we demonstrated that CTSB serves as a proapoptotic agent and plays a critical role in folliculogenesis in female mice by mediating apoptosis, autophagy, proliferation, and steroidogenesis. Hence, CTSB could be a potential prognostic agent for female infertility.
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Affiliation(s)
- Chao Chen
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.C.); (M.J.A.); (T.Y.); (C.D.); (X.Z.); (A.L.)
| | - Muhammad Jamil Ahmad
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.C.); (M.J.A.); (T.Y.); (C.D.); (X.Z.); (A.L.)
| | - Tingzhu Ye
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.C.); (M.J.A.); (T.Y.); (C.D.); (X.Z.); (A.L.)
| | - Chao Du
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.C.); (M.J.A.); (T.Y.); (C.D.); (X.Z.); (A.L.)
| | - Xinxin Zhang
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.C.); (M.J.A.); (T.Y.); (C.D.); (X.Z.); (A.L.)
| | - Aixin Liang
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.C.); (M.J.A.); (T.Y.); (C.D.); (X.Z.); (A.L.)
- Hubei Province’s Engineering Research Center in Buffalo Breeding and Products, Wuhan 430070, China
| | - Liguo Yang
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.C.); (M.J.A.); (T.Y.); (C.D.); (X.Z.); (A.L.)
- Hubei Province’s Engineering Research Center in Buffalo Breeding and Products, Wuhan 430070, China
- Correspondence: ; Tel.: +86-027-8728-1813
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Balboula AZ, Schindler K, Kotani T, Kawahara M, Takahashi M. Vitrification-induced activation of lysosomal cathepsin B perturbs spindle assembly checkpoint function in mouse oocytes. Mol Hum Reprod 2021; 26:689-701. [PMID: 32634244 DOI: 10.1093/molehr/gaaa051] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 06/16/2020] [Indexed: 01/05/2023] Open
Abstract
As the age of child-bearing increases and correlates with infertility, cryopreservation of female gametes is becoming common-place in ART. However, the developmental competence of vitrified oocytes has remained low. The underlying mechanisms responsible for reduced oocyte quality post-vitrification are largely unknown. Mouse cumulus-oocyte complexes were vitrified using a cryoloop technique and a mixture of dimethylsulphoxide, ethylene glycol and trehalose as cryoprotectants. Fresh and vitrified/thawed oocytes were compared for chromosome alignment, spindle morphology, kinetochore-microtubule attachments, spindle assembly checkpoint (SAC) and aneuploidy. Although the majority of vitrified oocytes extruded the first polar body (PB), they had a significant increase of chromosome misalignment, abnormal spindle formation and aneuploidy at metaphase II. In contrast to controls, vitrified oocytes extruded the first PB in the presence of nocodazole and etoposide, which should induce metaphase I arrest in a SAC-dependent manner. The fluorescence intensity of mitotic arrest deficient 2 (MAD2), an essential SAC protein, at kinetochores was reduced in vitrified oocytes, indicating that the SAC is weakened after vitrification/thawing. Furthermore, we found that vitrification-associated stress disrupted lysosomal function and stimulated cathepsin B activity, with a subsequent activation of caspase 3. MAD2 localization and SAC function in vitrified oocytes were restored upon treatment with a cathepsin B or a caspase 3 inhibitor. This study was conducted using mouse oocytes, therefore confirming these results in human oocytes is a prerequisite before applying these findings in IVF clinics. Here, we uncovered underlying molecular pathways that contribute to an understanding of how vitrification compromises oocyte quality. Regulating these pathways will be a step toward improving oocyte quality post vitrification and potentially increasing the efficiency of the vitrification program.
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Affiliation(s)
- Ahmed Z Balboula
- Division of Animal Sciences, Animal Sciences Research Center, University of Missouri, Columbia, MO 65211, USA.,Laboratory of Animal Breeding and Reproduction, Graduate school of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan.,Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Karen Schindler
- Department of Genetics, Rutgers University, Piscataway, NJ 08854, USA
| | - Tomoya Kotani
- Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Manabu Kawahara
- Laboratory of Animal Breeding and Reproduction, Graduate school of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan
| | - Masashi Takahashi
- Research Faculty of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan.,Global Station for Food, Land and Water Resources, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido 060-0815, Japan
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Vining LM, Zak LJ, Harvey SC, Harvey KE. The role of apoptosis in cryopreserved animal oocytes and embryos. Theriogenology 2021; 173:93-101. [PMID: 34365139 DOI: 10.1016/j.theriogenology.2021.07.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/24/2021] [Accepted: 07/25/2021] [Indexed: 01/11/2023]
Abstract
Cryopreservation of both gametes and embryos, both for storage and for the preservation of their developmental capacity is a critical aspect of assisted reproductive technology. The survival of reproductive material following cryopreservation protocols is not only vital to clinical applications in the human in vitro fertilisation clinic, but is also important in the in vitro production of livestock embryos. The ability to routinely cryopreserve oocytes and embryos of livestock species has the potential to improve animal welfare, reduce environmental impact, and reduce the associated costs for breeding companies through the reduction of live animal transportation. Unfortunately, frozen oocytes and embryos are regularly documented to contain a higher proportion of apoptotic cells compared to their non-frozen counterparts, with freezing procedures thought to trigger apoptotic pathways of cell death. Comparisons between frozen and non-frozen samples also show changes in the gene expression of apoptotic factors such as Bcl-2 and Bax in response to cryopreservation. Apoptotic inhibition has the potential to improve cryosurvival, and how to achieve this is subject to debate. Here, we review how exposure to low temperatures during cryopreservation may be responsible for the abnormal activation of apoptotic pathways in mammalian oocytes and embryos, and discuss the ways in which they can be influenced to improve cryopreservation protocols, particularly in agriculturally important species.
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Affiliation(s)
- Lucy May Vining
- School of Psychology and Life Sciences, Canterbury Christ Church University, Canterbury, CT1 1QU, UK
| | | | - Simon Crawford Harvey
- School of Psychology and Life Sciences, Canterbury Christ Church University, Canterbury, CT1 1QU, UK
| | - Katie Evelyn Harvey
- School of Psychology and Life Sciences, Canterbury Christ Church University, Canterbury, CT1 1QU, UK.
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Moorey SE, Monnig JM, Smith MF, Ortega MS, Green JA, Pohler KG, Bridges GA, Behura SK, Geary TW. Differential Transcript Profiles in Cumulus-Oocyte Complexes Originating from Pre-Ovulatory Follicles of Varied Physiological Maturity in Beef Cows. Genes (Basel) 2021; 12:genes12060893. [PMID: 34200628 PMCID: PMC8227736 DOI: 10.3390/genes12060893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 12/13/2022] Open
Abstract
Small dominant follicle diameter at induced ovulation, but not at spontaneous ovulation, decreased pregnancy rate, fertilization rate, and day seven embryo quality in beef cows. We hypothesized that the physiological status of the follicle at GnRH-induced ovulation has a direct effect on the transcriptome of the Cumulus-Oocyte complex, thereby affecting oocyte competence and subsequent embryo development. The objective of this study was to determine if the transcriptome of oocytes and associated cumulus cells (CC) differed among small (≤11.7 mm) and large follicles (≥12.7 mm) exposed to a GnRH-induced gonadotropin surge and follicles (11.7–14.0 mm) exposed to an endogenous gonadotropin surge (spontaneous follicles). RNA sequencing data, from pools of four oocytes or their corresponding CC, revealed 69, 94, and 83 differentially expressed gene transcripts (DEG) among oocyte pools from small versus large, small versus spontaneous, and large versus spontaneous follicle classifications, respectively. An additional 128, 98, and 80 DEG were identified among small versus large, small versus spontaneous, and large versus spontaneous follicle CC pools, respectively. The biological pathway “oxidative phosphorylation” was significantly enriched with DEG from small versus spontaneous follicle oocyte pools (FDR < 0.01); whereas the glycolytic pathway was significantly enriched with DEG from CC pools obtained from large versus small follicles (FDR < 0.01). These findings collectively suggest that altered carbohydrate metabolism within the Cumulus-Oocyte complex likely contributes to the decreased competency of oocytes from small pre-ovulatory follicles exposed to an exogenous GnRH-induced gonadotropin surge.
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Affiliation(s)
- Sarah E. Moorey
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
- Correspondence:
| | - Jenna M. Monnig
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Michael F. Smith
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - M. Sofia Ortega
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Jonathan A. Green
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Ky G. Pohler
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA;
| | - G. Alan Bridges
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA;
| | - Susanta K. Behura
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Thomas W. Geary
- USDA-ARS Fort Keogh Livestock and Range Research Lab, Miles City, MT 59301, USA;
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10
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Ying C, Yangsheng W, Jiapeng L, Liqin W, Xiaolin L, Mingjun L, Juncheng H. Transcriptome profiles of pre-pubertal and adult in vitro matured ovine oocytes obtained from FSH-stimulated animals. Reprod Domest Anim 2021; 56:1085-1094. [PMID: 33993545 DOI: 10.1111/rda.13951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 05/12/2021] [Indexed: 01/01/2023]
Abstract
Pre-pubertal females produce more oocytes than adult individuals, but the ability of oocytes to undergo embryonic development and produce viable offspring is less in pre-pubertal animals than in adult animals. Oocyte quality is associated with abnormal gene expression. To date, the transcriptome profiles of 1-month-old lamb oocytes after in vitro maturation (IVM) are poorly reported. This study aimed to identify differentially expressed genes (DEGs) in lamb oocytes with varying competencies, affecting oocyte competence. Using RNA sequencing (RNA developmental -seq) technology, the transcriptome profiles of 1-month-old lamb oocytes after IVM were assessed, and oocytes from adult sheep large follicles were used as controls. We found 11 up-regulated and 39 down-regulated DEGs in lamb oocytes. Gene Ontology analysis of DEGs showed that molecular functions were clustered in catalytic and binding activities, while biological processes were clustered in metabolic process, cellular process, single-organism process and biological regulation. Kyoto Encyclopedia of Genes and Genomes analysis showed that the DEGs were involved in oxidative phosphorylation, transforming growth factor-beta signalling pathway, or DNA replication. In lamb MII oocytes, down-regulation of oxidative phosphorylation genes (ATP5E, NDUFA7 and COX6C), thiol protease inhibitor (CSTB) and 26S proteasome component (SHFM1) and up-regulation of CUL1, MARCH7 and TRIM17 might cause low competence of lamb embryos. In conclusion, this study provided detailed information on mRNA transcriptomes in lamb oocytes after IVM, which offers insights into the reduced developmental potential of lamb oocytes.
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Affiliation(s)
- Chen Ying
- College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Wu Yangsheng
- Key Laboratory of Genetics Breeding and Reproduction of Grass Feeding Livestock, Ministry of Agriculture and Rural Affairs, Urumqi, China.,Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, China.,Institute of Biotechnology, Xinjiang Academy of Animal Science, Urumqi, China
| | - Lin Jiapeng
- Key Laboratory of Genetics Breeding and Reproduction of Grass Feeding Livestock, Ministry of Agriculture and Rural Affairs, Urumqi, China.,Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, China.,Institute of Biotechnology, Xinjiang Academy of Animal Science, Urumqi, China
| | - Wang Liqin
- Key Laboratory of Genetics Breeding and Reproduction of Grass Feeding Livestock, Ministry of Agriculture and Rural Affairs, Urumqi, China.,Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, China.,Institute of Biotechnology, Xinjiang Academy of Animal Science, Urumqi, China
| | - Li Xiaolin
- College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Liu Mingjun
- College of Animal Science and Technology, Shihezi University, Shihezi, China.,Key Laboratory of Genetics Breeding and Reproduction of Grass Feeding Livestock, Ministry of Agriculture and Rural Affairs, Urumqi, China.,Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, China.,Institute of Biotechnology, Xinjiang Academy of Animal Science, Urumqi, China
| | - Huang Juncheng
- Key Laboratory of Genetics Breeding and Reproduction of Grass Feeding Livestock, Ministry of Agriculture and Rural Affairs, Urumqi, China.,Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, China.,Institute of Biotechnology, Xinjiang Academy of Animal Science, Urumqi, China
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11
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Aboelenain M, El Domany WB, Eldoumani H, Khalil WA. Antioxidant response element activator, BTZO-1, improves the developmental competence of bovine oocytes. Reprod Domest Anim 2020; 55:1021-1024. [PMID: 32473610 DOI: 10.1111/rda.13733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/20/2020] [Indexed: 11/28/2022]
Abstract
Increased reactive oxygen species (ROS) generation may disrupt the oocytes function and their competence. In this study, we introduced BTZO-1, a new supplement that can regulate the oxidative stress. Addition of BTZO-1 during IVM of bovine oocytes improved their developmental competence in the term of improvement of blastocyst rates. In addition, the quality of the produced embryos was improved by decreasing the apoptosis level by showing a decreased number of TUNNEL positive cells.
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Affiliation(s)
- Mansour Aboelenain
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt.,Department of Genetics, Rutgers University, Piscataway, NJ, USA
| | - Wael B El Domany
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Haitham Eldoumani
- Department of Anatomy, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Wael A Khalil
- Department of Animal Production, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
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12
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Li J, Balboula AZ, Aboelenain M, Fujii T, Moriyasu S, Bai H, Kawahara M, Takahashi M. Effect of autophagy induction and cathepsin B inhibition on developmental competence of poor quality bovine oocytes. J Reprod Dev 2019; 66:83-91. [PMID: 31875588 PMCID: PMC7040212 DOI: 10.1262/jrd.2019-123] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The present study investigated the effect of autophagy induction and cathepsin B (CTSB) inhibition on developmental competence of poor quality oocytes. Bovine cumulus oocyte complexes
(COCs) were classified as good or poor according to their morphology. Autophagy activity was detected in good and poor germinal vesicle (GV) oocytes. Then E-64, a CTSB inhibitor, rapamycin
(Rapa), an autophagy inducer, and combined administration was achieved during in vitro maturation (IVM) of poor quality COCs followed by detection of autophagy activity. In
the next experiment, E-64, Rapa, and E64 + Rapa, were added during IVM to good and poor quality COCs followed by in vitro fertilization and culture for 8 days to investigate
whether inhibition of CTSB and/or induction of autophagy improve embryonic development and quality. Autophagy activity was significantly lower in poor quality GV oocytes than in good quality
ones. E-64, Rapa and E-64 + Rapa treatment during IVM significantly increased autophagy activity in poor quality oocytes. Addition of Rapa in good quality COCs did not increase the
blastocyst rate, whereas E-64 increased the blastocyst rate and total cell number (TCN) with decreasing TUNEL-positive cells. In contrast, Rapa treatment in poor quality COCs significantly
increased the blastocyst rate and TCN with decreasing TUNEL-positive cells. These results indicate oocyte quality has different responses to intracellular autophagy induction and CTSB
activity control by potential autophagy and catabolic status, however, synergetic effect of autophagy induction and CTSB inhibition can increase developmental competence of both good and
poor quality COCs, especially rescue effect in poor quality COCs.
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Affiliation(s)
- Jianye Li
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan
| | - Ahmed Zaky Balboula
- Animal Sciences Research Center, College of Agriculture, Food & Natural Resources, University of Missouri, Columbia, MO 65211, USA.,Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Mansour Aboelenain
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt.,Department of Genetics, Rutgers University, 145 Bevier Road, Piscataway, NJ 08854, USA
| | - Takashi Fujii
- Animal Research Center, Hokkaido Research Organization, Hokkaido 081-0038, Japan
| | - Satoru Moriyasu
- Animal Research Center, Hokkaido Research Organization, Hokkaido 081-0038, Japan
| | - Hanako Bai
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan
| | - Manabu Kawahara
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan
| | - Masashi Takahashi
- Research Faculty of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan.,Global Institution for Collaborative Research and Education, Hokkaido University, Hokkaido 060-8589, Japan
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13
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Li J, Maeji M, Balboula AZ, Aboelenain M, Fujii T, Moriyasu S, Bai H, Kawahara M, Takahashi M. Dynamic status of lysosomal cathepsin in bovine oocytes and preimplantation embryos. J Reprod Dev 2019; 66:9-17. [PMID: 31685761 PMCID: PMC7040204 DOI: 10.1262/jrd.2019-115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Lysosomal cathepsin, in particular cathepsin B (CTSB), plays an important role in implantation, pregnancy, and embryonic development. However, little is known about the mechanism related to
the dynamic status of lysosomal cathepsins in bovine oocytes and preimplantation embryos. In the present study, we investigated the dynamics of gene expression, activity, and
immunolocalization of CTSB, as well as the activities of lysosome, in bovine oocytes and preimplantation embryos. After gene expression analysis of several cathepsin-related genes,
transcript levels of CTSB, CTSD and CTSZ were highest in Metaphase II (MII) oocytes followed by a significant decrease from the 8-cell embryo stage.
Activity of CTSB showed a significant increase in 1-cell and morula stage embryos. Lysosomal activity was also significant higher in 1-cell and morula stages, which was consistent with CTSB
activities. However, immunolocalization of CTSB did not show the similar pattern of CTSB and lysosomal activities. We also found significantly higher expression levels of
CTSB transcript in the trophectoderm (TE) compared to inner cell mass (ICM), whereas activity and immunolocalization of CTSB showed an opposite pattern, i.e. significantly
higher in ICM than TE. These patterns were confirmed by the same analysis using separated ICM and TE. Our results suggest that lysosomal CTSB has a pivotal role during embryonic development
and differentiation, especially fertilization and the differentiation period.
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Affiliation(s)
- Jianye Li
- Laboratory of Animal Genetics and Reproduction, Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan
| | - Mana Maeji
- Laboratory of Animal Genetics and Reproduction, Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan
| | - Ahmed Zaky Balboula
- Animal Sciences Research Center, College of Agriculture, Food & Natural Resources, University of Missouri, Columbia, MO 65211, USA
| | - Mansour Aboelenain
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Takashi Fujii
- Animal Research Center, Hokkaido Research Organization, Hokkaido 081-0038, Japan
| | - Satoru Moriyasu
- Animal Research Center, Hokkaido Research Organization, Hokkaido 081-0038, Japan
| | - Hanako Bai
- Laboratory of Animal Genetics and Reproduction, Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan
| | - Manabu Kawahara
- Laboratory of Animal Genetics and Reproduction, Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan
| | - Masashi Takahashi
- Graduate School of Global Food Resources(GSF), Hokkaido University, Hokkaido 060-0809, Japan.,Global Station for Food, Land and Water Resources, Global Institution for Collaborative Research and Education(GI-CoRE), Hokkaido University, Hokkaido, 060-0815, Japan
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14
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Wang HL, Cheng X, Ding SW, Wang DW, Chen C, Xu CL, Xie H. Molecular identification and functional characterization of the cathepsin B gene (Ab-cb-1) in the plant parasitic nematode Aphelenchoides besseyi. PLoS One 2018; 13:e0199935. [PMID: 29958285 PMCID: PMC6025850 DOI: 10.1371/journal.pone.0199935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 06/15/2018] [Indexed: 11/23/2022] Open
Abstract
The rice white tip nematode, Aphelenchoides besseyi, is widely distributed in rice planting areas worldwide and causes serious economic losses. Cathepsin genes have been demonstrated to have importance in studying the reproduction, development, pathogenicity, and control methods of plant nematodes. In this paper, a novel cathepsin B gene, Ab-cb-1, was found and cloned. The Ab-cb-1 gene was 1347 bp in length and encodes 369 amino acids. The Ab-CB-1 protein contains characteristic occluding loops but no signal peptide. A homology analysis showed that Ab-CB-1 had the highest identity value (64%) to the known amino acid sequence of cathepsin B-like cysteine protease 6 from Toxocara canis. When Ab-cb-1 was expressed in a prokaryotic system, the protein massed approximately 45 kDa and could decompose carrot callus. Ab-cb-1 mRNA was localized in the nematode intestine. The relative expression level of Ab-cb-1 in the A. besseyi Ab-S24 population, which had high reproductivity, was approximately 6.9 times that in the Ab-N10 population, which had low reproductivity, and the difference was significant (p<0.05). The Ab-cb-1 expression level was highest in females; the expression levels in males, juveniles and eggs were 30%, 12.2% and 5% of that in females, respectively, and the differences were significant among all four stages (p<0.05). Nematodes of the Ab-S24 population were treated with Ab-cb-1 dsRNA for 12 h, 24 h, 36 h and 48 h, and their reproduction decreased with increasing time. These results demonstrated that Ab-CB-1 was a digestive enzyme with hydrolytic protease properties and that Ab-cb-1 played an important role in the reproduction of A. besseyi.
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Affiliation(s)
- Hong-Le Wang
- Laboratory of Plant Nematology and Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology / Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Xi Cheng
- Laboratory of Plant Nematology and Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology / Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Shan-Wen Ding
- Laboratory of Plant Nematology and Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology / Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Dong-Wei Wang
- Laboratory of Plant Nematology and Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology / Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Chun Chen
- Laboratory of Plant Nematology and Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology / Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Chun-Ling Xu
- Laboratory of Plant Nematology and Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology / Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Hui Xie
- Laboratory of Plant Nematology and Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology / Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China
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15
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Liang S, Jiang H, Shen XH, Zhang JB, Kim NH. Inhibition of cathepsin B activity prevents deterioration in the quality of in vitro aged porcine oocytes. Theriogenology 2018; 116:103-111. [PMID: 29800805 DOI: 10.1016/j.theriogenology.2018.04.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 04/29/2018] [Accepted: 04/30/2018] [Indexed: 02/06/2023]
Abstract
The activity of cathepsin B, a member of the lysosomal protease family, directly correlates with oocyte quality and subsequent embryonic development. However, its biological function during the progression of in vitro aging of oocytes in pigs has not been demonstrated. Here, we showed that cathepsin B activity was dramatically increased during in vitro aged oocytes. The inhibition of cathepsin B activity prevented the decline of the quality of aged oocytes and improved their subsequent developmental competence. Moreover, the inhibition of cathepsin B activity reduced aging-induced mitochondrial dysfunction and attenuated oxidative stress. The inhibition of cathepsin B activity also markedly decreased early apoptosis levels and the frequency of spindle anomalies during in vitro aging of oocytes. These results demonstrate that in vitro aging of oocytes induces cathepsin B activity, which is associated with a decline in oocyte quality. The inhibition of cathepsin B activity has a beneficial effect on oocytes during the process of in vitro aging.
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Affiliation(s)
- Shuang Liang
- Department of Animal Science, College of Animal Sciences, Jilin University, Changchun, Jilin, 130062, China; Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea
| | - Hao Jiang
- Department of Animal Science, College of Animal Sciences, Jilin University, Changchun, Jilin, 130062, China; Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea
| | - Xing-Hui Shen
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China
| | - Jia-Bao Zhang
- Department of Animal Science, College of Animal Sciences, Jilin University, Changchun, Jilin, 130062, China
| | - Nam-Hyung Kim
- Department of Animal Science, College of Animal Sciences, Jilin University, Changchun, Jilin, 130062, China; Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea.
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16
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Elmetwally MA, Lenis Y, Tang W, Wu G, Bazer FW. Effects of catecholamines on secretion of interferon tau and expression of genes for synthesis of polyamines and apoptosis by ovine trophectoderm†. Biol Reprod 2018; 99:611-628. [DOI: 10.1093/biolre/ioy085] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 04/09/2018] [Indexed: 12/11/2022] Open
Affiliation(s)
- Mohammed A Elmetwally
- Department of Animal Science, Texas A&M University, College Station, Texas, USA
- Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, Texas, USA
- Department of Theriogenology, Faculty of Veterinary Medicine, University of Mansoura, Mansoura, Egypt
| | - Yasser Lenis
- Department of Animal Science, Texas A&M University, College Station, Texas, USA
- Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, Texas, USA
- Centauro Research Group, School of Veterinary Medicine, Faculty of Agrarian Science, Universidad de Antioquia, Medellín, Colombia
- Faculty of Agricultural Sciences, U.D.C.A, Bogota, Colombia
| | - Wanjin Tang
- Department of Animal Science, Texas A&M University, College Station, Texas, USA
- Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, Texas, USA
| | - Guoyao Wu
- Department of Animal Science, Texas A&M University, College Station, Texas, USA
- Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, Texas, USA
| | - Fuller W Bazer
- Department of Animal Science, Texas A&M University, College Station, Texas, USA
- Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, Texas, USA
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17
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Yamanaka KI, Khatun H, Egashira J, Balboula AZ, Tatemoto H, Sakatani M, Takenouchi N, Wada Y, Takahashi M. Heat-shock-induced cathepsin B activity during IVF and culture compromises the developmental competence of bovine embryos. Theriogenology 2018; 114:293-300. [PMID: 29677632 DOI: 10.1016/j.theriogenology.2018.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 04/04/2018] [Accepted: 04/04/2018] [Indexed: 11/18/2022]
Abstract
Heat stress can cause significant reproductive dysfunction in mammals and previous studies report that expression and activity of cathepsin B (CTSB), a lysosomal cysteine protease, is negatively correlated with the developmental competence of bovine oocytes and embryos. However, the relationship between heat shock (HS) and CTSB remains largely unknown. Here, we investigated the effects of HS during IVF and early embryonic stages of IVC on CTSB activity and developmental competence in bovine embryos. HS (40 °C for 6 h during IVF and 20 h during IVC) caused a significant increase in CTSB activity irrespective of the developmental stage or duration of HS. The developmental rate to the blastocyst stage was also significantly decreased by HS. Additionally, HS during IVC significantly increased the number of apoptotic cells in blastocysts. Notably, these HS-induced changes in blastocyst development and quality were significantly improved by inhibition of CTSB activity, indicating a key role for CTSB. These results showed that CTSB activity plays an essential role in HS-induced dysfunction in bovine embryo development, and that inhibition of this activity could enhance the developmental competence of heat-shocked embryos.
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Affiliation(s)
- Ken-Ichi Yamanaka
- Faculty of Agriculture, Saga University, Saga, Japan; The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan.
| | - Hafiza Khatun
- Faculty of Agriculture, Saga University, Saga, Japan; The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan; Faculty of Animal Husbandry, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Junki Egashira
- Faculty of Agriculture, Saga University, Saga, Japan; The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan; Saga Prefectural Livestock Experiment Station, Saga, Japan
| | | | - Hideki Tatemoto
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan; Faculty of Agriculture, University of the Ryukyus, Okinawa, Japan
| | - Miki Sakatani
- Livestock and Grassland Research Division, Kyushu Okinawa Agricultural Research Center, NARO, Kumamoto, Japan
| | - Naoki Takenouchi
- Livestock and Grassland Research Division, Kyushu Okinawa Agricultural Research Center, NARO, Kumamoto, Japan
| | - Yasuhiko Wada
- Faculty of Agriculture, Saga University, Saga, Japan; The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
| | - Masashi Takahashi
- Research Faculty of Agriculture, Hokkaido University, Hokkaido, Japan
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18
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Expression of genes for enzymes synthesizing lysophosphatidic acid, its receptors and follicle developmental factors derived from the cumulus-oocyte complex is dependent on the ovarian follicle type in cows. Anim Reprod Sci 2018; 192:242-250. [PMID: 29573844 DOI: 10.1016/j.anireprosci.2018.03.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/05/2018] [Accepted: 03/16/2018] [Indexed: 11/21/2022]
Abstract
Cumulus-oocyte complexes (COCs) release factors potentially involved in follicular growth and development, such as growth and differentiation factor 9 (GDF9), bone-morphogenetic protein 15 (BMP15), follistatin (FST) and cathepsins (CTSs). Moreover, the quality of the oocytes and follicles may be related to both the lipid composition of the follicle cells and follicular fluid. One of the lipids, locally regulating the reproductive functions in ovaries of cattle, is lysophosphatidic acid (LPA). In this study, the expression was investigated of the genes for LPA and other factors in COCs of follicles at different stages of development and regression. The relative abundances of mRNA were determined by real-time PCR for receptors for LPA (LPARs), enzymes synthesizing LPA (autotaxin (AX) and phospholipase A2 (PLA2)), BMP15, GDF9, CTSZ, CTSB and FST in COCs isolated from healthy, transitional and atretic follicles. The expression of genes for the LPARs, AX, PLA2 and the factors involved in follicular development in cattle COCs is follicle-type dependent. Greater expression of LPAR1-3 and AX genes were detected in the healthy follicles compared to the atretic and transitional follicles (P < 0.05). The relative abundance of GDF9, BMP15, CTSZ and CTSB was also greater in COCs from healthy follicles than from transitional and atretic follicles (P < 0.05). It is postulated that the greater expression of LPARs and AX genes in healthy follicles compared with atretic follicles indicates an enhanced role of LPA in follicular development. Results of the present study also suggest the regulatory role of factors derived from the COCs in the growth and development of follicles.
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19
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Insulin Signaling Regulates Oocyte Quality Maintenance with Age via Cathepsin B Activity. Curr Biol 2018; 28:753-760.e4. [PMID: 29478855 DOI: 10.1016/j.cub.2018.01.052] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 12/15/2017] [Accepted: 01/15/2018] [Indexed: 01/02/2023]
Abstract
A decline in female reproduction is one of the earliest hallmarks of aging in many animals, including invertebrates and mammals [1-4]. The insulin/insulin-like growth factor-1 signaling (IIS) pathway has a conserved role in regulating longevity [5] and also controls reproductive aging [2, 6]. Although IIS transcriptional targets that regulate somatic aging have been characterized [7, 8], it was not known whether the same mechanisms influence reproductive aging. We previously showed that Caenorhabditis elegans daf-2 IIS receptor mutants extend reproductive span by maintaining oocyte quality with age [6], but IIS targets in oocytes had not been identified. Here, we compared the transcriptomes of aged daf-2(-) and wild-type oocytes, and distinguished IIS targets in oocytes from soma-specific targets. Remarkably, IIS appears to regulate reproductive and somatic aging through largely distinct mechanisms, although the binding motif for longevity factor PQM-1 [8] was also overrepresented in oocyte targets. Reduction of oocyte-specific IIS targets decreased reproductive span extension and oocyte viability of daf-2(-) worms, and pqm-1 is required for daf-2(-)'s long reproductive span. Cathepsin-B-like gene expression and activity levels were reduced in aged daf-2(-) oocytes, and RNAi against cathepsin-B-like W07B8.4 improved oocyte quality maintenance and extended reproductive span. Importantly, adult-only pharmacological inhibition of cathepsin B proteases reduced age-dependent deterioration in oocyte quality, even when treatment was initiated in mid-reproduction. This suggests that it is possible to pharmacologically slow age-related reproductive decline through mid-life intervention. Oocyte-specific IIS target genes thereby revealed potential therapeutic targets for maintaining reproductive health with age.
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20
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Liang S, Nie ZW, Zhao M, Niu YJ, Shin KT, Cui XS. Sodium fluoride exposure exerts toxic effects on porcine oocyte maturation. Sci Rep 2017; 7:17082. [PMID: 29213094 PMCID: PMC5719058 DOI: 10.1038/s41598-017-17357-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 11/22/2017] [Indexed: 01/17/2023] Open
Abstract
Excessive long-term fluoride intake is associated with several health problems, including infertility. However, limited information is available on the toxic effects of fluoride exposure on the female reproductive system, especially oocyte maturation. In this study, we investigated the toxic effect of sodium fluoride (NaF) exposure on porcine oocyte maturation and its possible underlying mechanisms. Our results showed that NaF exposure during porcine oocyte maturation inhibited cumulus cell expansion and impaired polar body extrusion. Cell cycle analysis showed that NaF exposure blocked meiotic resumption, disturbed spindle dynamics, disrupted chromosome separation, and increased aneuploidy in porcine oocytes. Moreover, NaF exposure disturbed mitochondrial function, triggered DNA damage response, and induced early apoptosis in porcine oocytes. NaF exposure also induced oxidative stress, decreased GSH level, and increased cathepsin B activity in and impaired the further development potential of porcine oocytes, as indicated by a decrease in blastocyst formation rate, increase in apoptosis, and inhibition of cell proliferation. Together, these results indicate that NaF exposure impairs the maturation capacity of porcine oocytes by inhibiting cumulus cell expansion, disturbing cytoskeletal dynamics, and blocking nuclear and cytoplasmic maturation, thus decreasing the quality and affecting the subsequent embryonic development potential of porcine oocytes.
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Affiliation(s)
- Shuang Liang
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea.,Department of Animal Sciences, College of Animal Sciences, Jilin University, Changchun, 130062, China
| | - Zheng-Wen Nie
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea
| | - Minghui Zhao
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea
| | - Ying-Jie Niu
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea
| | - Kyung-Tae Shin
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea
| | - Xiang-Shun Cui
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea.
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Júnior GAO, Perez BC, Cole JB, Santana MHA, Silveira J, Mazzoni G, Ventura RV, Júnior MLS, Kadarmideen HN, Garrick DJ, Ferraz JBS. Genomic study and Medical Subject Headings enrichment analysis of early pregnancy rate and antral follicle numbers in Nelore heifers. J Anim Sci 2017; 95:4796-4812. [PMID: 29293733 PMCID: PMC6292327 DOI: 10.2527/jas2017.1752] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 08/24/2017] [Indexed: 12/18/2022] Open
Abstract
Zebu animals () are known to take longer to reach puberty compared with taurine animals (), limiting the supply of animals for harvest or breeding and impacting profitability. Genomic information can be a helpful tool to better understand complex traits and improve genetic gains. In this study, we performed a genomewide association study (GWAS) to identify genetic variants associated with reproductive traits in Nelore beef cattle. Heifer pregnancy (HP) was recorded for 1,267 genotyped animals distributed in 12 contemporary groups (CG) with an average pregnancy rate of 0.35 (±0.01). Disregarding one of these CG, the number of antral follicles (NF) was also collected for 937 of these animals, with an average of 11.53 (±4.43). The animals were organized in CG: 12 and 11 for HP and NF, respectively. Genes in linkage disequilibrium (LD) with the associated variants can be considered in a functional enrichment analysis to identify biological mechanisms involved in fertility. Medical Subject Headings (MeSH) were detected using the MESHR package, allowing the extraction of broad meanings from the gene lists provided by the GWAS. The estimated heritability for HP was 0.28 ± 0.07 and for NF was 0.49 ± 0.09, with the genomic correlation being -0.21 ± 0.29. The average LD between adjacent markers was 0.23 ± 0.01, and GWAS identified genomic windows that accounted for >1% of total genetic variance on chromosomes 5, 14, and 18 for HP and on chromosomes 2, 8, 11, 14, 15, 16, and 22 for NF. The MeSH enrichment analyses revealed significant ( < 0.05) terms associated with HP-"Munc18 Proteins," "Fucose," and "Hemoglobins"-and with NF-"Cathepsin B," "Receptors, Neuropeptide," and "Palmitic Acid." This is the first study in Nelore cattle introducing the concept of MeSH analysis. The genomic analyses contributed to a better understanding of the genetic control of the reproductive traits HP and NF and provide new selection strategies to improve beef production.
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Affiliation(s)
| | - B. C. Perez
- Universidade de São Paulo (USP), Pirassununga, SP, Brazil
| | - J. B. Cole
- Animal Genomics and Improvement Laboratory, Agricultural Research Service, USDA, Beltsville, MD 20705-2350
| | | | - J. Silveira
- Universidade de São Paulo (USP), Pirassununga, SP, Brazil
| | - G. Mazzoni
- Department of Veterinary and Animal Sciences, University of Copenhagen, Denmark
- Section of Systems Genomics, Department of Bio and Health Informatics, Technical University of Denmark, Kemitorvet, 2800 Kgs. Lyngby, Denmark
| | - R. V. Ventura
- Beef Improvement Opportunities, Guelph, ON N1K1E5, Canada
- Centre for Genetic Improvement of Livestock, University of Guelph, Guelph, ON N1G2W1, Canada
| | | | - H. N. Kadarmideen
- Section of Systems Genomics, Department of Bio and Health Informatics, Technical University of Denmark, Kemitorvet, 2800 Kgs. Lyngby, Denmark
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22
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Pezhman M, Hosseini SM, Ostadhosseini S, Rouhollahi Varnosfaderani S, Sefid F, Nasr-Esfahani MH. Cathepsin B inhibitor improves developmental competency and cryo-tolerance of in vitro ovine embryos. BMC DEVELOPMENTAL BIOLOGY 2017; 17:10. [PMID: 28676034 PMCID: PMC5496377 DOI: 10.1186/s12861-017-0152-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 06/26/2017] [Indexed: 02/08/2023]
Abstract
Background Cathepsin B is a lysosomal cysteine protease involved in apoptosis and oocytes which have lower developmental competence show higher expression of Cathepsin B. Furthermore, expression of Cathepsin B show a decreasing trend from oocyte toward blastocyst stage. Results Present study assessed the effect of cathepsin B inhibitor, E-64, on developmental competency and cryo-survival of pre-implantation ovine IVF derived embryos. Cathepsin B inhibitor was added during day 3 to 8 of development. One μM E-64 was defined as the optimal concentration required for improving blastocyst rate. This concentration also reduced DNA fragmentation and BAX as apoptotic markers while increasing total cell number per blastocyst and improving anti-apoptotic marker, the BCL2. We further showed that addition of 1.0 μM of E-64 during day 3 to 8 of development improved re-expansion and hatching rates of blastocysts post vitrification. E-64 also reduced rate of DNA fragmentation and BAX expression and increased total cell number per blastocyst and BCL2 expression post vitrification. However, addition of E-64 post vitrification reduced the hatching rate. Conclusion Therefore, it can be concluded that inhibition of cathepsin B in IVC, not only improves quality and quantity of blastocysts but also improves the cryo-survival of in vitro derived blastocysts.
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Affiliation(s)
- M Pezhman
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran.,Department of Biology, Faculty of Science, Nour Danesh Institute of Higher Education, Isfahan, Meymeh, Iran
| | - S M Hosseini
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran
| | - S Ostadhosseini
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran
| | - Sh Rouhollahi Varnosfaderani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran
| | - F Sefid
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran
| | - M H Nasr-Esfahani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran.
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23
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Liu MH, Liu AJ, Qi X, Liu ZT, Chang QL, Hao YL, Wang HY, Sun SC, Li JJ, Tian SJ. Excessive expression and activity of cathepsin B in sheep cumulus cells compromises oocyte developmental competence. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Wiesak T, Wasielak M, Złotkowska A, Milewski R. Effect of vitrification on the zona pellucida hardening and follistatin and cathepsin B genes expression and developmental competence of in vitro matured bovine oocytes. Cryobiology 2017; 76:18-23. [PMID: 28487134 DOI: 10.1016/j.cryobiol.2017.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 05/02/2017] [Accepted: 05/03/2017] [Indexed: 12/15/2022]
Abstract
The purpose of our study was to assess the effect of vitrification with or without the presence of calcium in the vitrification solution on the: 1) diameter of oocytes and thickness of the zona pellucida, 2) zona pellucida hardening, 3) expression of mRNA follistatin (FST) and cathepsin B (CTSB) in oocytes and 4) developmental competence of embryos derived from in vitro matured and vitrified oocytes. The results of our study demonstrate, that vitrification did not alter thickness of the zona pellucida and diameter of the oocytes, however it triggered hardening of the zona pellucida. The presence of calcium in the vitrification solutions intensified hardening of zona in immature and mature oocytes (P < 0.04, P < 0.001, respectively) and provoked increased mRNA FST expression in oocytes matured in vitro compared to immature oocytes (P < 0.01) and those vitrified without calcium (P < 0.004). CTSB mRNA expression was increased in immature oocytes and oocytes vitrified with calcium compare to mature oocytes (P < 0.02). The developmental potential of vitrified oocytes was impaired compared to non-vitrified oocytes, being more evident in oocytes vitrified with calcium. In summary, vitrification did not change the oocyte diameter and thickness of the zona pellucida and expression of FST and CTSB mRNA. It diminished developmental potential of the vitrified oocytes. The presence of calcium in the vitrification solutions increased hardening of zona pellucida as well as affected the level of FST and CTSB mRNA in oocytes and developmental potential of these oocytes.
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Affiliation(s)
- Teresa Wiesak
- Department of Gamete and Embryo Biology, The Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland.
| | - Marta Wasielak
- Department of Gamete and Embryo Biology, The Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland; Center of Gynaecology and Endocrinology and Reproductive Medicine - Artemida, Olsztyn, Poland
| | - Aleksandra Złotkowska
- Department of Hormonal Action Mechanisms, The Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Robert Milewski
- Department of Statistics and Medical Informatics, Medical University of Bialystok, Poland
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25
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Aboelenain M, Balboula AZ, Kawahara M, El-Monem Montaser A, Zaabel SM, Kim SW, Nagano M, Takahashi M. Pyridoxine supplementation during oocyte maturation improves the development and quality of bovine preimplantation embryos. Theriogenology 2017; 91:127-133. [PMID: 28215677 DOI: 10.1016/j.theriogenology.2016.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/21/2016] [Accepted: 12/21/2016] [Indexed: 01/19/2023]
Abstract
Recently, inhibition of cathepsin B (CTSB) activity during in vitro maturation (IVM) and culture (IVC) improved the developmental competence and quality of bovine oocytes and embryos. E-64 is a widely used inhibitor to inhibit CTSB activity, however, E-64 inhibits not only CTSB activity but also the activities of other proteases including cathepsin L (CTSL), papain, calpain, and trypsin. Pyridoxine, the catalytically active form of vitamin B6, plays a crucial role in several cellular processes and has the ability to inhibit CTSB activity. However, whether pyridoxine has an improving effect during IVM of bovine oocytes is still unknown. In this study, we investigated the effect of pyridoxine supplementation during IVM on the developmental competence of bovine oocytes and the quality of the produced blastocysts. Supplementation of pyridoxine to the maturation medium significantly decreased the activity of CTSB in both bovine cumulus cells and oocytes. Moreover, pyridoxine improved both the blastocyst and hatched blastocyst rates. In addition, the presence of pyridoxine during IVM also significantly improved the quality of the produced embryos by increasing the total cell number as well as decreasing the CTSB mRNA expression and apoptotic rate. These results indicate that pyridoxine is a promising tool to improve the developmental competence of bovine oocytes and subsequent embryo quality.
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Affiliation(s)
- Mansour Aboelenain
- Laboratory of Animal Breeding and Reproduction, Department of Animal Science, Graduate School of Agriculture, Hokkaido University, Hokkaido, 060-8589, Japan; Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Ahmed Zaky Balboula
- Laboratory of Animal Breeding and Reproduction, Department of Animal Science, Graduate School of Agriculture, Hokkaido University, Hokkaido, 060-8589, Japan; Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Manabu Kawahara
- Laboratory of Animal Breeding and Reproduction, Department of Animal Science, Graduate School of Agriculture, Hokkaido University, Hokkaido, 060-8589, Japan
| | - Abd El-Monem Montaser
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Samy Moawad Zaabel
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Sung-Woo Kim
- National Institute of Animal Science, Animal Genetic Resources Research Center, Namwon, 55717, South Korea
| | - Masashi Nagano
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, 060-0818, Japan
| | - Masashi Takahashi
- Laboratory of Animal Breeding and Reproduction, Department of Animal Science, Graduate School of Agriculture, Hokkaido University, Hokkaido, 060-8589, Japan.
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26
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Liang S, Yuan B, Kwon JW, Ahn M, Cui XS, Bang JK, Kim NH. Effect of antifreeze glycoprotein 8 supplementation during vitrification on the developmental competence of bovine oocytes. Theriogenology 2016; 86:485-494.e1. [PMID: 26948296 DOI: 10.1016/j.theriogenology.2016.01.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 01/26/2016] [Accepted: 01/30/2016] [Indexed: 11/19/2022]
Abstract
The purpose of this study was to investigate the effect of antifreeze glycoprotein 8 (AFGP8) supplementation during vitrification on the survival, fertilization, and embryonic development of bovine oocytes and the underlying molecular mechanism(s). Survival, fertilization, early embryonic development, apoptosis, DNA double-strand breaks, reactive oxygen species levels, meiotic cytoskeleton assembly, chromosome alignment, and energy status of mitochondria were measured in the present experiments. Compared with that in the nonsupplemented group; survival, monospermy, blastocyst formation rates, and blastomere counts were significantly higher in the AFGP8-supplemented animals. Oocytes of the latter group also presented fewer double-strand breaks and lower cathepsin B and caspase activities. Rates of normal spindle organization and chromosome alignment, actin filament impairment, and mitochondrial distribution were significantly higher in the AFGP8-supplemented group. In addition, intracellular reactive oxygen species levels significantly decreased in the AFGP8-supplemented groups, maintaining a higher ΔΨm than that in the nonsupplemented group. Taken together, these results indicated that supplementation with AFGP8 during vitrification has a protective effect on bovine oocytes against chilling injury.
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Affiliation(s)
- Shuang Liang
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Bao Yuan
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea; Department of Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, China
| | - Jeong-Woo Kwon
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Mija Ahn
- Division of Magnetic Resonance, Korea Basic Science Institute, Chungbuk, Republic of Korea
| | - Xiang-Shun Cui
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute, Chungbuk, Republic of Korea
| | - Nam-Hyung Kim
- Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea; Department of Laboratory Animal Center, College of Animal Sciences, Jilin University, Changchun, China.
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27
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Kim SH, Zhao MH, Liang S, Cui XS, Kim NH. Inhibition of cathepsin B activity reduces apoptosis by preventing cytochrome c release from mitochondria in porcine parthenotes. J Reprod Dev 2015; 61:261-8. [PMID: 25903788 PMCID: PMC4547983 DOI: 10.1262/jrd.2015-019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Cathepsin B, a lysosomal cysteine protease of the papain family, has recently been implicated in the quality and developmental competence of bovine preimplantation embryos. In this study, to determine whether inhibition of cathepsin B activity can improve porcine oocyte maturation and early embryo developmental competence, we supplemented in vitro maturation or embryo culture media with E-64, a cathepsin B inhibitor. Cathepsin B activity was high in poor quality germinal vesicle stage oocytes, but no differences in mRNA expression or protein localization were observed between good and poor quality oocytes, which were categorized based on morphology. Following treatment with 1 μM E-64, cathepsin B activity sharply decreased in 4-cell and blastocyst stage embryos. E-64 had no effect on cell number but significantly (P < 0.05) increased blastocyst formation and decreased the number of apoptotic cells in blastocysts. It also significantly (P < 0.05)
enhanced mitochondrial membrane potential in blastocysts, reducing the release of cytochrome c and resulting in decreased expression of Caspase-3 and Caspase-9. In conclusion, inhibition of cathepsin B activity in porcine parthenotes using 1 μM E-64 resulted in attenuation of apoptosis via a reduction in the release of cytochrome c from mitochondria.
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Affiliation(s)
- Seon-Hyang Kim
- Department of Animal Sciences, Chungbuk National University, Chungbuk 361-763, Republic of Korea
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28
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Bastu E, Gokulu SG, Dural O, Yasa C, Bulgurcuoglu S, Karamustafaoglu Balci B, Celik C, Buyru F. The association between follicular fluid levels of cathepsin B, relaxin or AMH with clinical pregnancy rates in infertile patients. Eur J Obstet Gynecol Reprod Biol 2015; 187:30-4. [PMID: 25739053 DOI: 10.1016/j.ejogrb.2015.02.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Revised: 02/03/2015] [Accepted: 02/06/2015] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the relationship of cathepsin B, relaxin and anti-Mullerian hormone (AMH) in follicular fluid (FF) with pregnancy rates in infertility patients. STUDY DESIGN Seventy-nine infertile couples who underwent ICSI were included in the study. The FF levels of cathepsin B, relaxin and AMH were measured using ELISA kits. RESULTS The FF cathepsin B levels were statistically higher in pregnant patients compared with non-pregnant patients (0.20±0.13 versus 0.13±0.03; P<0.001). There were statistically significant differences in the total number of oocytes (10.00±6.85 versus 5.96±3.94); the mean number of M2 oocytes (8.65±5.63 versus 4.58±3.36) between the pregnant and non-pregnant patients (P<0.05). There were no significant correlations between pregnancy rates and relaxin and AMH (P>0.05). The area under the curve of cathepsin B for prediction of pregnancy was 0.662 (p=0.024, 95% Confidence Interval 0.528-0.797). CONCLUSIONS This study demonstrated that increased level of cathepsin B in FF significantly correlates with a better chance of clinical pregnancy. Further studies are needed to clarify the role of cathepsin B in the reproductive process of humans.
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Affiliation(s)
- Ercan Bastu
- Department of Obstetrics and Gynecology, Istanbul University School of Medicine, Istanbul, Turkey.
| | - Sevki Goksun Gokulu
- Department of Obstetrics and Gynecology, Ege University School of Medicine, Izmir, Turkey
| | - Ozlem Dural
- Department of Obstetrics and Gynecology, Istanbul University School of Medicine, Istanbul, Turkey
| | - Cenk Yasa
- Department of Obstetrics and Gynecology, Istanbul University School of Medicine, Istanbul, Turkey
| | - Sibel Bulgurcuoglu
- Department of Obstetrics and Gynecology, Istanbul University School of Medicine, Istanbul, Turkey
| | | | - Cem Celik
- Bahceci Health Group, Istanbul, Turkey
| | - Faruk Buyru
- Department of Obstetrics and Gynecology, Istanbul University School of Medicine, Istanbul, Turkey
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Hao L, Midic U, Garriga J, Latham KE. Contribution of CBX4 to cumulus oophorus cell phenotype in mice and attendant effects in cumulus cell cloned embryos. Physiol Genomics 2013; 46:66-80. [PMID: 24280258 DOI: 10.1152/physiolgenomics.00071.2013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Cumulus oophorus cells play an essential role in oocyte development. They are also widely employed as donor cells for cloning by somatic cell nuclear transfer. Our previous studies revealed that Cbx4 mRNA was overexpressed in cloned two-cell embryos. These data indicated that CBX4 may regulate normal cumulus cell differentiation and that its overexpression in clones could contribute to aberrant gene regulation. We used siRNA-mediated knockdown of Cbx4 to assess its role in determining cumulus cell phenotype and compared the effects of this knockdown to published data for aberrant gene regulation in cloned embryos. We observed widespread effects on the expression of genes related to diverse processes in cultured cumulus cells, including cell assembly/proliferation and DNA replication/repair, endocrine function, carbohydrate and lipid metabolism, inflammation, and cell morphology, with apparent effects of CBX4 in promoting cumulus cell proliferation and survival and inhibiting differentiation. Overall, the data implicate CBX4 as a key component in the pathway integrating endocrine signals, intraovarian paracrine factors, and oocyte-derived factors in the control of cumulus cell functions. We also observed altered expression of 25 cumulus cell markers of oocyte quality, indicating an important role of CBX4 in production of high quality oocytes. Finally, we found that about one-quarter of the genes showing aberrant transcription in cloned embryos are sensitive to Cbx4 knockdown in cumulus cells, consistent with a role for aberrant Cbx4 regulation in elaborating abnormal cloned embryo characteristics.
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Affiliation(s)
- Lanping Hao
- The Fels Institute for Cancer Research, Temple University School of Medicine, Philadelphia, Pennsylvania; and
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30
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Min SH, Song BS, Yeon JY, Kim JW, Bae JH, Park SY, Lee YH, Chang KT, Koo DB. A cathepsin B inhibitor, E-64, improves the preimplantation development of bovine somatic cell nuclear transfer embryos. J Reprod Dev 2013; 60:21-7. [PMID: 24240170 PMCID: PMC3963301 DOI: 10.1262/jrd.2013-074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bovine somatic cell nuclear transfer (SCNT) is an important and powerful tool for basic
research and biomedical and agricultural applications, however, the efficiency of SCNT has
remained extremely low. In this study, we investigated the effects of cathepsin B
inhibitor (E-64) supplementation of culture medium on in vitro
development of bovine SCNT embryos. We initially used three concentrations of E-64 (0.1,
0.5, 1.0 μm), among which 0.5 μm resulted in the highest rate of blastocysts production after in
vitro fertilization (IVF), and was therefore used for further experiments.
Blastocyst development of SCNT embryos in the E-64 treatment group also increased relative
to the control. Moreover, the cryosurvival rates of IVF and SCNT blastocysts were
increased in E-64 treatment groups when compared with the control. On the other hand, we
found that IVF and SCNT blastocysts derived from E-64-treated groups had increased total
cell numbers and decreased apoptotic nuclei. Furthermore, assessment of the expression of
apoptosis-related genes (Bax and Bcl-xL) in bovine IVF and SCNT blastocysts treated with
E-64 by real-time RT-PCR analysis revealed suppressed expression of the pro-apoptotic gene
Bax and stimulated expression of the anti-apoptotic gene Bcl-xL. Taken together, these
finding indicate that addition of E-64 to embryo culture medium may have important
implications for improving developmental competence and preimplantation quality in bovine
IVF and SCNT embryos.
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Affiliation(s)
- Sung-Hun Min
- Department of Biotechnology, College of Engineering, Daegu University, Gyeongbuk 712-714, Republic of Korea
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Balboula AZ, Yamanaka K, Sakatani M, Kawahara M, Hegab AO, Zaabel SM, Takahashi M. Cathepsin B activity has a crucial role in the developmental competence of bovine cumulus-oocyte complexes exposed to heat shock during in vitro maturation. Reproduction 2013; 146:407-17. [PMID: 23898216 DOI: 10.1530/rep-13-0179] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cathepsin B was found to be correlated inversely with the quality of bovine oocytes and embryos. The aims of this study were to evaluate i) the relationship between heat shock during in vitro maturation (IVM) of bovine cumulus-oocyte complexes (COCs) and cathepsin B activity in relation to apoptosis and ii) the effect of supplementation of cathepsin B inhibitor (E-64) during IVM of heat-shocked COCs on embryonic development. After IVM at 38.5 °C for 22 h (control group) or at 38.5 °C for 5 h followed by 41 °C for 17 h (heat shock group) either with or without 1 μM E-64, activities and protein expression of cathepsin B and caspase 3 were evaluated as well as TUNEL staining. After IVF, developmental rate, total cell number, and the percentage of apoptotic cells in blastocysts were evaluated on day 8 (day 0, IVF day). Heat-shocked IVM COCs showed significantly high activities and expressions of both cathepsin B, and caspase 3 accompanied by a significant increase in number of TUNEL-positive cells. Addition of E-64 significantly decreased the activities of cathepsin B and caspase 3, and TUNEL-positive cells in heat-shocked IVM COCs. Moreover, addition of 1 μM E-64 during IVM under heat shock conditions significantly improved both developmental competence and quality of the produced embryos. These results indicate that heat shock induction of cathepsin B is associated with apoptosis of COCs, and inhibition of cathepsin B activity can improve the developmental competence of heat-shocked COCs during IVM.
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Affiliation(s)
- A Z Balboula
- Kyushu Okinawa Agricultural Research Center, National Agriculture and Food Research Organization (NARO), 2421 Suya, Kumamoto 861-1192, Japan
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Salhab M, Dhorne-Pollet S, Auclair S, Guyader-Joly C, Brisard D, Dalbies-Tran R, Dupont J, Ponsart C, Mermillod P, Uzbekova S. In vitro maturation of oocytes alters gene expression and signaling pathways in bovine cumulus cells. Mol Reprod Dev 2013; 80:166-82. [PMID: 23280668 DOI: 10.1002/mrd.22148] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 12/17/2012] [Indexed: 12/24/2022]
Abstract
In vitro maturation (IVM) of immature oocytes is widely used in assisted reproduction technologies in cattle, and is increasingly used to treat human infertility. The development competence of IVM oocytes, however, is lower than preovulatory, in vivo-matured oocytes. During maturation, cumulus cells (CC) are metabolically coupled with an oocyte and support the acquisition of its developmental potential. Our objective was to identify genes and pathways that were affected by IVM in bovine CC. Microarray transcriptomic analysis of CC enclosing in vitro- or in vivo-mature oocytes revealed 472 differentially expressed genes, including 28% related to apoptosis, correlating with twofold higher cell death after IVM than in vivo, as detected by TUNEL. Genes overexpressed after IVM were significantly enriched in functions involved in cell movement, focal adhesion, extracellular matrix function, and TGF-beta signaling, whereas under-expressed genes were enriched in regulating gene expression, energy metabolism, stress response, and MAP kinases pathway functions. Differential expression of 15 genes, including PAG11 (increased) and TXNIP (decreased), which were never detected in CC before, was validated by real-time RT-PCR. Moreover, protein quantification confirmed the lower abundance of glutathione S-transferase A1 and prostaglandin G/H synthase 2, and the higher abundance of hyaluronan synthase 2 and SMAD4, a member of TGF-beta pathway, in CC after IVM. Phosphorylation levels of SMAD2, MAPK3/1, and MAPK14, but not MAPK8, were higher after IVM that in vivo. In conclusion, IVM provokes the hyper-activation of TGF-beta and MAPK signaling components, modifies gene expression, leads to increased apoptosis in CC, and thus affects oocyte quality.
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Affiliation(s)
- Mohamad Salhab
- INRA, UR85 Physiologie de la Reproduction et des Comportements, Nouzilly, France
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Charlier C, Montfort J, Chabrol O, Brisard D, Nguyen T, Le Cam A, Richard-Parpaillon L, Moreews F, Pontarotti P, Uzbekova S, Chesnel F, Bobe J. Oocyte-somatic cells interactions, lessons from evolution. BMC Genomics 2012; 13:560. [PMID: 23083410 PMCID: PMC3532176 DOI: 10.1186/1471-2164-13-560] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 10/16/2012] [Indexed: 12/31/2022] Open
Abstract
Background Despite the known importance of somatic cells for oocyte developmental competence acquisition, the overall mechanisms underlying the acquisition of full developmental competence are far from being understood, especially in non-mammalian species. The present work aimed at identifying key molecular signals from somatic origin that would be shared by vertebrates. Results Using a parallel transcriptomic analysis in 4 vertebrate species - a teleost fish, an amphibian, and two mammals - at similar key steps of developmental competence acquisition, we identified a large number of species-specific differentially expressed genes and a surprisingly high number of orthologous genes exhibiting similar expression profiles in the 3 tetrapods and in the 4 vertebrates. Among the evolutionary conserved players participating in developmental competence acquisition are genes involved in key processes such as cellular energy metabolism, cell-to-cell communications, and meiosis control. In addition, we report many novel molecular actors from somatic origin that have never been studied in the vertebrate ovary. Interestingly, a significant number of these new players actively participate in Drosophila oogenesis. Conclusions Our study provides a comprehensive overview of evolutionary-conserved mechanisms from somatic origin participating in oocyte developmental competence acquisition in 4 vertebrates. Together our results indicate that despite major differences in ovarian follicular structure, some of the key players from somatic origin involved in oocyte developmental competence acquisition would be shared, not only by vertebrates, but also by metazoans. The conservation of these mechanisms during vertebrate evolution further emphasizes the important contribution of the somatic compartment to oocyte quality and paves the way for future investigations aiming at better understanding what makes a good egg.
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Affiliation(s)
- Cathy Charlier
- INRA, UR LPGP Fish Physiology and Genomics, Campus de Beaulieu, Rennes, France
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Follicular determinants of pregnancy establishment and maintenance. Cell Tissue Res 2012; 349:649-64. [DOI: 10.1007/s00441-012-1386-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 02/23/2012] [Indexed: 01/14/2023]
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Bilodeau-Goeseels S. Bovine oocyte meiotic inhibition before in vitro maturation and its value to in vitro embryo production: does it improve developmental competence? Reprod Domest Anim 2011; 47:687-93. [PMID: 21988654 DOI: 10.1111/j.1439-0531.2011.01924.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The efficiency of bovine in vitro embryo production has remained low despite extensive effort to understand the effects of culture conditions, media composition and supplementation. As bovine oocytes resume meiosis spontaneously when cultured, it was hypothesized that preventing meiosis in vitro before in vitro maturation (IVM) and in vitro fertilization (IVF) would allow more oocytes to acquire developmental competence. This article reviews some of the factors involved in meiotic arrest as well as the effects of meiotic inhibition before IVM on bovine oocytes developmental competence following IVF. Follicular components and cAMP-elevating agents can delay or inhibit meiosis in various proportions of oocytes; however, few studies have examined their effects on development following IVM and IVF because they are not practical (follicular components) or have a transient effect on meiosis (cAMP-elevating agents). Protein synthesis or phosphorylation inhibition prevented meiosis in high percentages of oocytes; however, these non-specific inhibitions led to lower developmental competence compared with non-arrested oocytes. Maturation promoting factor (MPF) inhibition with specific inhibitors has been examined in several studies. Despite faster maturation following removal from inhibition and some structural damage to the oocytes, MPF inhibition generally led to blastocyst rates similar to control, non-arrested oocytes. Future work will involve evaluating the effects on arrested oocytes of molecules that can improve developmental competence in non-arrested oocytes. It is also anticipated that new IVM systems that take into consideration new knowledge of the mechanisms involved in the control of meiosis will be developed. Moreover, global gene expression analysis studies will also provide clues to the culture conditions required for optimal expression of developmental competence.
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Affiliation(s)
- S Bilodeau-Goeseels
- Agriculture and Agri-Food Canada, Lethbridge Research Centre, Lethbridge, AB, Canada.
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The effects of cysteine addition during in vitro maturation on the developmental competence, ROS, GSH and apoptosis level of bovine oocytes exposed to heat stress. ZYGOTE 2011; 20:249-59. [DOI: 10.1017/s0967199411000220] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SummaryIn the present study, we investigated the effects of various concentrations of cysteine (0.0, 0.6, 1.2 and 1.8 mM) added to the maturation medium on nuclear maturation and subsequent embryonic development of bovine oocytes exposed to heat stress (HS: set at 39.5 °C for 5 h, 40.0 °C for 5 h, 40.5 °C for 6 h, and 40.0 °C for 4 h versus 38.5 °C for 20 h as the control group). This regime mimicked the circadian rhythm of the vaginal temperature of lactating dairy cows during the summer season in southwestern Japan. Moreover, we also evaluated the oocyte's reactive oxygen species (ROS) and glutathione (GSH) levels and the apoptosis levels of the oocytes and cumulus cells in the presence or absence of 1.2 mM cysteine. As a result, HS in the without-cysteine group significantly suppressed (p < 0.05) both the nuclear maturation rate up to the metaphase (M)II stage and the blastocyst formation rate compared with that of the control group. In addition, this group showed significantly higher (p < 0.05) ROS levels and significantly lower (p < 0.05) GSH levels than those of the control group. Moreover, the level of TdT-mediated dUTP nick end labelling (TUNEL)-positive cumulus cells in the HS without-cysteine group was significantly higher (p < 0.05) than that of the control group. However, the addition of 1.2 mM cysteine to the maturation medium restored not only the nuclear maturation, blastocyst formation rates and GSH contents, but also increased the ROS and TUNEL-positive levels of the cumulus cells, but not oocytes, to that of the control group. These results indicate that the addition of 1.2 mM cysteine during in vitro maturation (IVM) may alleviate the influence of heat stress for oocyte developmental competence by increasing GSH content and inhibiting the production of oocyte ROS followed by apoptosis of cumulus cells.
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Yamanaka KI, Kaneda M, Inaba Y, Saito K, Kubota K, Sakatani M, Sugimura S, Imai K, Watanabe S, Takahashi M. DNA methylation analysis on satellite I region in blastocysts obtained from somatic cell cloned cattle. Anim Sci J 2011; 82:523-30. [PMID: 21794009 DOI: 10.1111/j.1740-0929.2011.00881.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Many observations have been made on cloned embryos and on adult clones by somatic cell nuclear transfer (SCNT), but it is still unclear whether the progeny of cloned animals is presenting normal epigenetic status. Here, in order to accumulate the information for evaluating the normality of cloned cattle, we analyzed the DNA methylation status on satellite I region in blastocysts obtained from cloned cattle. Embryos were produced by artificial insemination (AI) to non-cloned or cloned dams using semen from non-cloned or cloned sires. After 7 days of AI, embryos at blastocyst stage were collected by uterine flushing. The DNA methylation levels in embryos obtained by using semen and/or oocytes from cloned cattle were similar to those in in vivo embryos from non-cloned cattle. In contrast, the DNA methylation levels in SCNT embryos were significantly higher (P < 0.01) than those in in vivo embryos from non-cloned and cloned cattle, approximately similar to those in somatic cells used as donor cells. Thus, this study provides useful information that epigenetic status may be normal in the progeny of cloned cattle, suggesting the normality of germline cells in cloned cattle.
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Affiliation(s)
- Ken-Ichi Yamanaka
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto, Japan
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Balboula A, Yamanaka K, Sakatani M, Hegab A, Zaabel S, Takahashi M. Intracellular cathepsin B activity is inversely correlated with the quality and developmental competence of bovine preimplantation embryos. Mol Reprod Dev 2010; 77:1031-9. [DOI: 10.1002/mrd.21250] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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